Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Banded)
Clastic Sedimentary Rock (composed of SiO2, CaCO3, or Fe2O3 cement)
Jasper and Quartz Breccia
Silica breccia (SiO2)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Chert / Quartzite
Silicon Dioxide (SiO2)
Sandstone (Painted)
Arenite (primarily SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Sandstone (with Iron Staining)
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Dendritic sandstone
Sandstone with Manganese Oxide dendrites
Hag Stone
Siltstone or Fine-grained Sandstone with boring (e.g., Lithophaga impact)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Red Jasper
Red Jasper (SiO2)
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
Quartz on Host Rock
Silicon Dioxide (SiO2)
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Polished red jasper (likely hematite-bearing jasper)
Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides such as hematite/goethite
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Jasper (likely Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
Dalmatian Jasper
Peralkalic Quartz-Feldspar Porphyry
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
Shale creek bed
Shale (fine-grained clastic sedimentary rock)
Red Sandstone
Clastic Sedimentary Rock
Sandstone
Clastic Sedimentary Rock
Sandstone
Clastic Sedimentary Rock
Quartz Crystal
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Calcite
Calcite (Calcium Carbonate, CaCO3)
Calcite
Calcium Carbonate (CaCO3)